Your yoga instructor invites you to go round hers and do a more personal yoga session since you have being having so much fun together in the gym. You accept and cannot wait. She wears tight revealing booty shorts and you cannot help but look at her ass through out the session. She catches you looking and rather than telling you off for being inappropriate she reveals she wore a tiny outfit on purpose to get you attention. She actually loves it when you look at her and especially when you wank off to her naked ass. She would love you to get your cock out and wank over her ass, with little hesitation you do it!